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Snellen Chart

Hopefully by now, we’ve all seen one. The projected or wall-mounted Snellen eye chart, usually topped by the big letter “E”, is a common visual acuity test used to measure your sharpness of vision at multiple distances.

Arranged as a pyramid of sorts, the letters in the Snellen chart are specifically chosen and arranged to test your sharpness and clarity of vision at a baseline distance of 20 feet. During a visual acuity test, the Snellen eye chart is viewed as a projection, or mounted on a wall.

Handheld versions of Snellen charts are used for testing near vision as well.

By viewing or reading each line from top to bottom (with one eye covered at a time), your eye doctor can gain a general approximation of the quality of your visual acuity, or sharpness. Where a line of characters begin to become difficult to see is the approximate measurement of your vision.

The Snellen chart serves as a beginning—not an end—to a comprehensive eye examination.

What does “20/20” vision mean?

Snellen charts help to determine a baseline for your vision in each eye—a baseline typically measured against “20/20” vision. This means when you are 20 feet away from an object, you can comfortably see details that most people with normal vision can also see at 20 feet distance.

If you have 20/30 vision, that means what you see comfortably at 20 feet, can be seen by a person with “normal” vision at 30 feet. Your vision is weaker, in other words.

Conversely? In the rare instances where vision may test better than normal on a Snellen chart, a value of 20/10 vision means that you can see clearly from a distance of 20 feet, what a person with normal vision sees well at a distance of 10 feet. Make sense?

In fact, if you look closely at a Snellen eye chart, you’ll see the vision values associated with measuring your vision on the right or left side of each line of characters.

 

Special thanks to the EyeGlass Guide, for informational material that aided in the creation of this website. Visit the EyeGlass Guide today!

Office Update: 

COVID 19 has challenged many of us to find a new normal and we are excited to announce the changes coming to VCO. Starting Monday, May 4 our offices will be open to serve patients. In order to maintain social distancing and provide you the best care possible, we have new extended business hours for 2020! This means our front desk is diligently working to reschedule patients to fit the doctors' new schedules. All of our doctors will now have hours at both locations! In addition, we are following careful guidelines to sanitize the office, exam rooms, and optical. We also ask that you follow the guidelines below to help keep all of our patients and employees safe and healthy. Thank you for your patience during these changes and we look forward to serving you soon!

Sincerely,

Vision Care Ophthalmology

NEW CLINIC & OPTICAL HOURS:

W. Jefferson Location: 

Monday: 7:30am - 5:30pm

Tuesday & Wednesday: 9:00am - 7:00pm

Thursday & Friday: 7:30am - 5:30pm

Lake Ave Location:

Monday - Friday 7:30am - 5:30pm

Huntertown:

Monday to Friday - 8:00am - 5:00pm

*This location is for exams only. No optical on-site

PATIENT GUIDELINES

+ EVERYONE IN THE BUILDING IS REQUIRED TO WEAR A MASK+